Symptoms
（1）Suspected Malaria：
Malaria is suspected when a patient presents with fever（or history of fever）and other symptoms and signs suggestive of malaria.The health care personnel in this case must try to exclude clinically other common causes of fever，such as：tonsillitis，chest infection，abscess，urinary tract infection，etc.
（2）Severe malaria：
Severe malaria is defined as malaria due to P.falciparum infection that is sufficiently serious to be an immediate threat to life.It is a medical emergency，which requires hospitalization.Most severe malaria occurs in children under 5 years of age.Although most children with malaria have fever or history of fever，the fever may be variable in patients who have progressed to severe malaria.Children with suspected severe malaria should be examined for other conditions（e.g.pneumonia，meningitis）as a possible cause of their symptoms；and if these diseases are found，they should be managed accordingly.If severe malaria is diagnosed in a child in the out-patient setting，the child should be referred immediately for hospitalization.
Symptoms for severe malaria：
①impaired level of consciousness（cerebral malaria），
②respiratory distress（acidotic respiratory），(https://www.daowen.com)
③repetitive convulsions，
④circulatory collapse，
⑤pulmonary oedema，
⑥abnormal bleeding，
⑦jaundice，
⑧haemoglobinuria，
⑨prostration.